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KS3 Biology:

Genetics

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Q1-3: These questions are about traits - like the colour of your eyes - which can be passed from parent to offspring.

close up of blue eye
1. Which of these is not a trait that can be passed genetically from parent to offspring ?
  • A. height as an adult
  • B. hair colour
  • C. foot size
  • D. language
2. Which of these sentences is correct?
  • A. The word 'Biome' means the passing of traits from parent to offspring
  • B. The word 'Chromosome' means the passing of traits from parent to offspring
  • C. The word 'Gene' means the passing of traits from parent to offspring
  • D. The word 'Heredity' means the passing of traits from parent to offspring

3. Where do traits like eye color and hair colour come from?

  • A. from the mother only
  • B. from the father only
  • C. from mother and father
  • D. from environmental factors when we are born
Q4-7: Eva is interested in genetics in her class, and does a quick survey of 10 other students.
She finds that 4 of them have blue (or blue/green) eyes, and the other 6 have brown eyes. 5 of them are boys, and 5 are girls.
 

4. What percentage of the 10 students had brown eyes?

5. A trait like gender (male or female) that can only take a few values is called a ..

  • A. delimited variable
  • B. limited variable
  • C. discontinuous variable
  • D. continuous variable
6. Eva is completing a report. She is trying to decide which chart to draw to show eye colour. She is choosing from bar charts, pie charts or line graphs. infographic showing different chart types

Which of thses would be suitable to show her results for eye colour?

  • A. bar chart only
  • B. line graph only
  • C. pie chart or bar chart
  • D. pie chart or line graph

7. Eva wants to do a survey in her class and look at a continuous variable next. Which of these is NOT a continuous variable?

  • A. height
  • B. weight
  • C. left or right handed
  • D. hand span
Q8-10: These questions are about the structures inside cells that pass on genetic information.  

8. The genetic information passed from parent to offspring has been found to be contained in the nucleus of cells, in long filament structures, as shown in this diagram.


(Not too scale, false colour used)

These structures labelled X are called..

  • A. cell membranes
  • B. chloroplasts
  • C. cytoplasm
  • D. chromosomes
9. Which of these sentences best describes 'DNA'?
  • A. a small section of the nucleus of a cell where respiration takes place
  • B. a large 'spiral' (helix) molecule that contains genetic information
  • C. a molecule that controls substances moving in or out of the nucleus
  • D. many small molecules containing genetic information

10. A small section of DNA that can determine a trait is called a ..

  • A. gene
  • B. chloroplast
  • C. franklin
  • D. function